CVE WatchOct 9, 2026

CVE-2015-5477

ISC BIND Data Processing Errors Vulnerability

CVSS

7.5

High

EPSS

99.4%

p100

KEV

YES

Oct 8, 2026

Exploit Today

0-100

Published: Jul 29, 2015 · Last modified: Oct 9, 2026 · CWE-19 · CWE-617

EPSS · 30d

91.3%EPSS · 30 days99.4%

2026-09-172026-10-15

KEV catalog record

Product

ISC / BIND

Vulnerability

ISC BIND Data Processing Errors Vulnerability

Added to KEV

Oct 8, 2026

Remediate by

Oct 11, 2026

Known ransomware use

Summary description

ISC BIND contains a data processing errors vulnerability that could allow remote attackers to cause a denial of service via TKEY queries.

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://web.archive.org/web/20150729014733/https://kb.isc.org/article/AA-01272 ; https://access.redhat.com/errata/RHSA-2015:1513.html; https://supportportal.juniper.net/s/article/2016-01-Security-Bulletin-Junos-Vulnerability-in-ISC-BIND-named-CVE-2015-5477 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2015-5477

Technical description

named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via TKEY queries.

Official references

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